Thermoplastic resin composition and molded product using the same

Abstract

A thermoplastic resin composition includes: 100 parts by weight of a base resin including (A) about 35 wt % to about 55 wt % of an acrylic graft copolymer; (B) about 35 wt % to about 55 wt % of an aromatic vinyl-vinyl cyanide copolymer; and (C) about 2 wt % to about 15 wt % of an alkyl(meth)acrylate-based resin; (D) about 0.4 parts by weight to about 2 parts by weight of a first sterically hindered amine represented by Chemical Formula 1 described in the detailed description; and (E) about 0.4 parts by weight to about 2 parts by weight of a second sterically hindered amine represented by Chemical Formula 2 described in the detailed description.

What is claimed is: 
     
       1. A thermoplastic resin composition, comprising:
 100 parts by weight of a base resin comprising: 
 (A) about 35 wt % to about 55 wt % of an acrylonitrile-styrene-acrylate graft copolymer; 
 (B) about 35 wt % to about 55 wt % of an aromatic vinyl-vinyl cyanide copolymer; and 
 (C) about 2 wt % to about 15 wt % of an alkyl(meth)acrylate-based resin; 
 (D) about 1 parts by weight to about 2 parts by weight of a first sterically hindered amine represented by Chemical Formula 1; and 
 (E) about 1 parts by weight to about 2 parts by weight of a second sterically hindered amine represented by Chemical Formula 2: 
 
       
         
           
           
               
               
           
         
         wherein, in Chemical Formula 2, m is an integer of 2 to 20. 
       
     
     
       2. The thermoplastic resin composition of  claim 1 , wherein the acrylonitrile-styrene-acrylate graft copolymer (A) comprises a core comprising an acrylate polymer, and
 a shell formed by grafting a monomer mixture comprising an styrene and a acrylonitrile on the core. 
 
     
     
       3. The thermoplastic resin composition of  claim 2 , wherein the acrylate rubbery polymer is a cross-linked polymer of monomers comprising ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, hexyl acrylate, or a combination thereof. 
     
     
       4. The thermoplastic resin composition of  claim 2 , wherein the acrylate polymer is included in an amount of about 20 wt % to about 60 wt % of the acrylonitrile-styrene-acrylate graft copolymer (A). 
     
     
       5. The thermoplastic resin composition of  claim 2 , wherein in the monomer mixture the styrene and the acrylonitrile are present in a weight ratio of about 5:5 to about 8:2. 
     
     
       6. The thermoplastic resin composition of  claim 2 , wherein the core has an average particle diameter of about 100 nm to about 800 nm. 
     
     
       7. The thermoplastic resin composition of  claim 1 , wherein the (B) aromatic vinyl-vinyl cyanide copolymer comprises a copolymer of a monomer mixture comprising about 60 wt % to about 80 wt % of an aromatic vinyl compound and about 20 wt % to about 40 wt % of a vinyl cyanide compound based on 100 wt % of the aromatic vinyl-vinyl cyanide copolymer. 
     
     
       8. The thermoplastic resin composition of  claim 1 , wherein the aromatic vinyl-vinyl cyanide copolymer (B) has a weight average molecular weight of about 80,000 g/mol to about 200,000 g/mol. 
     
     
       9. The thermoplastic resin composition of  claim 1 , wherein the (B) aromatic vinyl-vinyl cyanide copolymer is a styrene-acrylonitrile copolymer. 
     
     
       10. The thermoplastic resin composition of  claim 1 , wherein the alkyl (meth)acrylate-based resin (C) has a glass transition temperature of about 100° C. to about 150° C. 
     
     
       11. The thermoplastic resin composition of  claim 10 , wherein the alkyl (meth)acrylate-based resin (C) is a polymethylmethacrylate resin. 
     
     
       12. The thermoplastic resin composition of  claim 1 , further comprising an additive comprising a flame retardant, a nucleating agent, a coupling agent, filler, a plasticizer, an impact-reinforcing agent, a lubricant, an antibacterial agent, a release agent, a heat stabilizer, an antioxidant, an ultraviolet (UV) absorber, an antistatic agent, a pigment, and/or a dye. 
     
     
       13. A molded product using the thermoplastic resin composition of  claim 1 .